15-16 December 2020
Centre for Particle Theory, Durham
Europe/London timezone

Charting the Fifth Force Landscape

16 Dec 2020, 16:00
Teams (Centre for Particle Theory, Durham)


Centre for Particle Theory, Durham

IPPP & Dept. Mathematical Sciences Durham University South Road Durham DH1 3LE


Hannah Banks (University of Cambridge)


In recent years particle physics research has undergone somewhat of a phase transition, looking increasingly towards hidden sectors and the feebly interacting frontier. In this talk I will introduce a new approach to parameterising dark sector forces, underpinned by the Källén-Lehman representation, in which the effects of any general scalar fifth force are captured by a single positive-definite spectral function. Using this language, I will demonstrate how the effects of loop-level forces can be simply obtained, without needing to explicitly perform loop calculations. I will also show how experimental observables can be expressed in completely general terms, facilitating the straightforward extraction of limits to any specific model. Finally, I will discuss how this framework opens the possibility to speculatively probe violations of unitarity, causality or locality within hidden sectors.

Will you be pre-recording your talk? No
Length of talk 15-25 minutes
Are you happy for your talk to be recorded? Yes
Would you be interested in receiving feedback on your talk? Yes

Primary author

Hannah Banks (University of Cambridge)

Presentation Materials